/*
 *
 *  *  Copyright 2010-2016 OrientDB LTD (http://orientdb.com)
 *  *
 *  *  Licensed under the Apache License, Version 2.0 (the "License");
 *  *  you may not use this file except in compliance with the License.
 *  *  You may obtain a copy of the License at
 *  *
 *  *       http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  *  Unless required by applicable law or agreed to in writing, software
 *  *  distributed under the License is distributed on an "AS IS" BASIS,
 *  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  *  See the License for the specific language governing permissions and
 *  *  limitations under the License.
 *  *
 *  * For more information: http://orientdb.com
 *
 */
package com.orientechnologies.common.collection;

import java.util.LinkedHashMap;
import java.util.Map;

/** The most simpler LRU cache implementation in Java. */
public class OLRUCache<K, V> extends LinkedHashMap<K, V> {

  private static final long serialVersionUID = 0;

  private final int cacheSize;

  public OLRUCache(final int iCacheSize) {
    super(16, (float) 0.75, true);
    this.cacheSize = iCacheSize;
  }

  protected boolean removeEldestEntry(final Map.Entry<K, V> eldest) {
    return size() >= cacheSize;
  }
}
